Add geom consumer parapater to slicer and rootfs search method fdt slicer like OpenWRT.

[yamori813_yahoo.co.jp]

Summary

This is reimplimentation of D13648

Test Plan

CFI and SPI flash on sys/mips/medeatek

[yamori813_yahoo.co.jp]

this is dts setting.

firmware: partition@50000 {
        compatible = "denx,uimage";
        label = "firmware";
        reg = <0x00050000 0x00390000>;
        read-only;
};

[• ian]

This change is unacceptable. Child nodes of a flash device which represent partitions must not have a compatible property, it is forbidden by the bindings document. I believe the correct way to do this is that there must be a child node with a compatible of "fixed-partitions", then within that node, there can be child nodes describing partitions which have compatible properties on them. Right now, fdt_slicer doesn't handle that kind of node structure.

Adding the checks for denx,uimage into the slicer in a way that requires it to do IO doesn't seem correct either. The fdt_slicer is for creating partitions that require out-of-band metadata (fdt data) to describe. Finding partitions by reading the content of the media seems like it should be handled the same way as other partitioning schemes that read media and create partitions from what they find (gpt, mbr, etc).

[yamori813_yahoo.co.jp]

In D22685#496456, @ian wrote:

This change is unacceptable. Child nodes of a flash device which represent partitions must not have a compatible property, it is forbidden by the bindings document. I believe the correct way to do this is that there must be a child node with a compatible of "fixed-partitions", then within that node, there can be child nodes describing partitions which have compatible properties on them. Right now, fdt_slicer doesn't handle that kind of node structure.

Adding the checks for denx,uimage into the slicer in a way that requires it to do IO doesn't seem correct either. The fdt_slicer is for creating partitions that require out-of-band metadata (fdt data) to describe. Finding partitions by reading the content of the media seems like it should be handled the same way as other partitioning schemes that read media and create partitions from what they find (gpt, mbr, etc).

I want same function of geom_map. How do I modify ?

[yamori813_yahoo.co.jp]

I found "denx,uimage" in this dts file.

https://github.com/openwrt/openwrt/blob/f1410902e6c089a53935ab44e83207e877445bc5/target/linux/ramips/dts/rt3883_sitecom_wlr-6000.dts#L134